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We conducted long-term monitoring of the doubly imaged gravitationally lensed quasar SDSS J1001+5027 consisting of spectro-photometric observations separated by $\sim$120 days (time delay between both quasar images), as well as test and…

Astrophysics of Galaxies · Physics 2025-09-03 Luis J. Goicoechea , Vyacheslav N. Shalyapin

Optical focusing through/inside scattering media, like multimode fiber and biological tissues, has significant impact in biomedicine yet considered challenging due to strong scattering nature of light. Previously, promising progress has…

We demonstrate the formation of a complex, multi-wavelength, three-dimensional laser beam configuration with integrated metasurface optics. Our experiments support the development of a compact Sr optical-lattice clock, which leverages…

In the lattice designs for the next generation storage ring light sources, longitudinal gradient bending magnets and anti-bending magnets have been adopted. A logical question raised by the trend of varying the longitudinal distribution of…

Accelerator Physics · Physics 2019-02-20 Tong Zhang , Xiaobiao Huang

We revisit the nonlinear lattice design approach for the National Synchrotron Light Source II (NSLS-II) storage ring. By suppressing chaos, we identify alternative sextupole configurations to the original design, which relied on the…

Accelerator Physics · Physics 2026-03-09 Yongjun Li , Minghao Song , Yoshiteru Hidaka , Victor Smaluk , Timur Shaftan

SHINE, as the first hard x-ray free-electron-laser (FEL) facility in China, is designed to provide high-brightness FEL lasing under high-repetition-rate operation mode. In order to drive x-ray FEL pulses with high qualities, the…

Accelerator Physics · Physics 2021-05-28 Zihan Zhu , Jiawei Yan , Duan Gu , Qiang Gu

Particle accelerators are among some of the largest science experiments in the world and can consist of thousands of components with a wide variety of input ranges. These systems can easily become unwieldy optimization problems during…

Accelerator Physics · Physics 2022-11-01 Nicole Neveu , Tyler H. Chang , Paris Franz , Stephen Hudson , Jeffrey Larson

Spatial photonic Ising machines (SPIMs) based on spatial light modulators (SLMs) have emerged as highly effective solvers for many tasks, including combinatorial optimization problems and spin-glass simulations. However, traditional SPIMs…

We discuss the choice of the magnetic lattice and parameter optimization of the fourth generation light source SKIF (Russian acronym for Siberian Circular Photon Source) under construction in Novosibirsk. The study compares several basic…

Accelerator Physics · Physics 2021-07-08 G. Baranov , A. Bogomyagkov , E. Levichev , S. Sinyatkin

The High Energy Photon Source (HEPS), is the first fourth-generation storage ring light source being built in the suburb of Beijing, China. The storage ring was designed with the emittance lower than 60 pm.rad with a circumference of 1.36…

Accelerator Physics · Physics 2024-06-07 Yuemei Peng , Daheng Ji , Hongfei Ji , Nan Li , Xiaohan Lu , Saike Tian , Yuanyuan Wei , Haisheng Xu , Yaliang Zhao , Yi Jiao , Jingyi Li

Mobile light scatterers in a high-Q optical cavity transversely illuminated by laser light close to a cavity resonance form ordered patterns, which maximize light scattering into the cavity and induce optical self-trapping. We show that a…

Quantum Physics · Physics 2014-07-25 Valentin Torggler , Helmut Ritsch

The future Laser Interferometer Space Antenna (LISA) mission, which has successfully passed Mission Formulation phase, is in planning to be launched in 2030s. One of the ubiquitous LISA sources are the white-dwarf binaries (WDB) of which…

Instrumentation and Methods for Astrophysics · Physics 2023-12-04 Sweta Shah , Valeriya Korol , Thomas Kupfer

It was shown in a previous work that the data combinations canceling laser frequency noise constitute a module - the module of syzygies. The cancellation of laser frequency noise is crucial for obtaining the requisite sensitivity for LISA.…

General Relativity and Quantum Cosmology · Physics 2014-11-17 K. Rajesh Nayak , S. V. Dhurandhar , A. Pai , J-Y Vinet

In this paper two formulations for the robust optimization of the size of the permanent magnet in a synchronous machine are discussed. The optimization is constrained by a partial differential equation to describe the electromagnetic…

Optimization and Control · Mathematics 2018-08-07 Zeger Bontinck , Oliver Lass , Sebastian Schöps , Stefan Ulbrich , Oliver Rain

Nighttime photography encounters escalating challenges in extremely low-light conditions, primarily attributable to the ultra-low signal-to-noise ratio. For real-world deployment, a practical solution must not only produce visually…

Computer Vision and Pattern Recognition · Computer Science 2024-01-11 Jiazhang Zheng , Lei Li , Qiuping Liao , Cheng Li , Li Li , Yangxing Liu

A simplified Recycler lattice was created to fine tune injection straight, ring tune, and phase trombone. In this paper, we will present detailed modifications for further optimization of Recycler lattice which requires the investigation of…

Accelerator Physics · Physics 2012-07-25 M. Xiao , L. G. Vorobiev , D. E. Johnson

Synchrotron light source storage rings aim to maintain a continuous beam current without observable beam motion during injection. One element that paves the way to this target is the non-linear kicker (NLK). The field distribution it…

Accelerator Physics · Physics 2024-05-16 Alexander Schuett

The ability of spatial light modulators (SLMs) to modify the amplitude and phase of light has proved them invaluable to the optics and photonics community. In many applications the bit-depth of SLMs is a major limiting factor dictated by…

The LHC machine is planning an upgrade program, which will smoothly bring the instantaneous luminosity to about $5-7.5\times10^{34}~\mathrm{cm}^{-2}\mathrm{s}^{-1}$ in 2028, to possibly reach an integrated luminosity of 3000-4500 fb$^{-1}$…

Instrumentation and Detectors · Physics 2019-11-07 Ernesto Migliore